LSN50 Waterproof Long Range Wireless LoRaWAN Sensor Node

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LSN50 Waterproof Long Range Wireless LoRaWAN Sensor Node

LSN50 LoRa Sensor Node is a Long Range LoRa/LoRaWAN Sensor Node. It is designed for outdoor use and powered by Li/SOCl2 battery for long-term use. LSN50 is designed to facilitate developers to quickly deploy industrial level LoRa and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to program, create and connect your things everywhere.

LSN50 wireless part is based on SX1276/SX1278 allows the user to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.

LSN50-V2 MCU part uses STM32l0x chip from ST, STML0x is the ultra-low-power STM32L072xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

LSN50-V2 is an open-source product, it is based on the STM32Cube HAL drivers and lots of libraries can be found in ST site for rapid development.

Features:

STM32L072CZT6 MCU
SX1276/78 LoRa Wireless Modem
Pre-load with ISP bootloader
I2C,LPUSART1,USB
18 x Digital I/Os
2 x 12bit ADC; 1 x 12bit DAC
MCU wake up by UART or Interrupt
LoRa™ Modem
Preamble detection
Baud rate configurable
LoRaWAN 1.0.2 Specification
Software base on STM32Cube HAL drivers
Open-source hardware / software
Available Band:433/868/915/920 Mhz
IP68 Waterproof Enclosure
Ultra-Low Power consumption
AT Commands to setup parameters
4000mAh Battery for Long term use

Applications:

Wireless Alarm and Security Systems
Home and Building Automation
Automated Meter Reading
Industrial Monitoring and Control
Long-range Irrigation Systems, etc.

LoRa Spec

168 dB maximum link budget.
+20 dBm - 100 mW constant RF output vs.
+14 dBm high efficiency PA.
Programmable bit rate up to 300 kbps.
High sensitivity: down to -148 dBm.
Bullet-proof front end: IIP3 = -12.5 dBm.
Excellent blocking immunity.
Low RX current of 10.3 mA, 200 nA register retention.
Fully integrated synthesizer with a resolution of 61 Hz.
FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
Built-in bit synchronizer for clock recovery.
Preamble detection.
127 dB Dynamic Range RSSI.
Automatic RF Sense and CAD with ultra-fast AFC.
Packet engine up to 256 bytes with CRC.
Built-in temperature sensor and low battery indicator.

Absolute Maximum Ratings:

VCC: 0.5v ~ 3.9v
Operating Temperature: -40 ~ 85°C
I/O pins: 0.5v ~ VCC+0.5V

Common DC Characteristics:

Supply Voltage: 1.8v ~ 3.6v
Operating Temperature: -40 ~ 85°C
I/O pins: Refer STM32L072CZT6 datasheet

Power Consumption:

STOP Mode: 2.7μA @ 3.3v
RX Mode: 7.2mA
TX Mode: 125mA@ 20dbm

Battery:

Li/SOCI2 rechargeable battery
Capacity: 4000mAh
Self Discharge: <1% / Year @ 25°C
Max continuously current: 130mA
Max boost current: 2A, 1 second

Note: The sensor or probe is not included.

Documents: